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Advertising on the internet is a nuisance — getting in the way of your browsing, using your bandwidth, and lumbering you with trackers that send your data to people you might not want to have it. Installing ad blockers on each of your devices is time-consuming; and some of your devices, like smart TVs or other smart devices, won’t have a local ad-blocking option available. By raspberrypi.com.

Pi-hole is what’s known as a DNS sinkhole. DNS (Domain Name System) is like an address book for the internet. Pi-hole gets into the middle of this process and filters the lookups so that if your device tries to show you an advert it can block it. Everything else is displayed as normal, but the ads will be missing.

Further in the article:

• How does Pi-hole work?
• What you’ll need
• Choosing the right Raspberry Pi and accessories
• Installing Raspberry Pi OS Lite
• Starting and updating your Raspberry Pi
• Creating a static IP address for your Raspberry Pi
• Installing Pi-hole
• Changing your router’s default DNS server to Pi-hole
• Accessing and administering Pi-hole
• Using Pi-hole as a DHCP server

…and more. This is depth tutorial with screen shots and detaield explanation of each step. Pi-hole can make a big difference to your overall internet experience, reducing the number of banners, pop-ups, videos, and other types of advertising you are compelled to see. How effective it is depends on the websites you visit and the blacklist you use. There are a number of sites dedicated to testing the effectiveness of ad-blockers: Adblock Tester, for example, scored 57 out of 100 with Pi-hole running, and only 27 out of 100 without it (MacOS and Safari browser). Superb!

Stress and burnout are having a massive impact on cybersecurity teams, leaving people and businesses more vulnerable than ever. Cybersecurity professionals are “reaching their breaking point” as ransomware attacks increase and create new risks for people and businesses. By Owen Hughes.

A global study of 1,100 cybersecurity professionals by Mimecast found that one-third are considering leaving their role in the next two years due to stress and burnout.

Nearly two-thirds (64%) of cybersecurity leaders surveyed by Mimecast said they had experienced at least one ransomware attack in the past year, while 77% said the number of cyberattacks against their company had either increased or stayed the same since 2021… These attacks have “personal consequences” for the wellbeing of cybersecurity professionals, Mimecast found: more than half (54%) of respondents agreed that ransomware attacks had a negative impact on their mental health, while 56% reported that their role gets more stressful each year.

One-third of teams reported an increased number of burnout-related absences following an attack. In addition, 34% of cybersecurity leaders reported difficulties in recruiting IT staff once an attack has taken place, making it even more difficult for organizations to prevent incidents in the future. Follow the link to the full article for more details!

With the race towards autonomy becoming fiercer, the costs to use these new enabling technologies are rising exponentially. Moreover, the need for talent and experts across the world is forcing companies to shift to remote work. You’ve probably heard of virtual desktop infrastructures (VDI) and vGPUs (virtual GPUs), but why would you need one and how could they help your company? By Bertrand Boisseau.

In order to validate autonomous driving (AD) and ADAS systems, algorithms have to go through intense simulations. These simulations require building virtual scenes that replicate very realistic environments where driving scenarios can be tested.

In tihs article you will get info on:

• Setting the stage for autonomous vehicle validation
• Early work on simulations kicks off
• GPUs add much-needed power but scalability issues arise
• Enter VDIs
• vGPUs save the day

Use of NVIDIA virtual GPUs enables the teams now provision virtual GPU devices on-demand, without buying additional hardware. This allows them to allocate GPU resources on the fly to VMs. By doing so, not only do they increase efficiency by improving resource consumption, they also accelerate the way their developers work. Nice one!

An ancient Agathis australis tree with rings that document the near-reversal of Earth’s magnetic field has been discovered on New Zealand’s north island. The tree, which measures 8 feet in diameter and 65 feet in length, was found buried under 26 feet of soil. Carbon dating shows that the tree was alive for 1,500 years and lived between 41,000 and 42,500 years ago. By @ilovetheuniverse.com.

The tree’s rings show a complete record of the near-reversal of Earth’s magnetic field. This is the first time that a tree documenting the full event has ever been found. Reversals in our planet’s magnetic field have been linked to extinction events. Scientists studying the tree say that it provides insight into what we might expect the next time we experience a reversal of Earth’s magnetic field.

NASA warned earlier this year that the magnetic “north pole” is speeding toward Russia at 30 miles per year, indicating the start of a total pole reversal. While it can take thousands of years for the poles to completely flip, their journey to the other side can cause chaos in the meantime, as the magnetic field lines cross and become jumbled, weakening their ability to protect us from solar radiation.

Scientists are scrambling to develop models to determine how that will look in practice. This tree will assist them in doing so. Super interesting!

The channel acts as a pipe by which we send typed values from one Goroutine to another. It guarantees synchronization since only one Goroutine has access to a data item at any given time. The ownership of the data is passed between different Goroutine. By Neeraj Kumar.

Source: https://dev.to/neeraj1997dev/concurrency-in-go-2go-channels-24lk

In this guide you will learn:

• Why use channels in golang?
• Creating a Go channel
• Steps to create a channel in Go
• Directional channel in Go
• Go channel use cases
• Use of range in Go channels
• Select statement in Go channels
• Fan in and fan out in golang channel

… and much more. Code examples thoroughly explain the concept. In Go, channels are essential for communication between goroutines. Channels support bidirectional communication i.e sending and receiving values on the same channel. This mechanism enables goroutines to synchronize without experiencing any deadlock. Nice one!

Kubernetes service constructs create highly available services in mixed container and VM environments without any external components. By Fatih Nar (Navigator, Red Hat), Rimma Iontel (Red Hat).

OpenShift supports the best of both virtualization worlds: virtual machines (VMs) and containers. In the containers and Kubernetes world, the “services” model permits external access to and consumption of applications that are deployed as containers within the pods.

In the article you will find:

• How OpenShift creates VMs
• Implement load balancing with multiple VMs
• Test VM traffic
• Create highly available services

You can leverage Kubernetes service constructs to create highly available services in a mixed container and VM environment, and you can do it without the need for any external components. This approach can be very handy in small-footprint and edge deployments where container and VM workloads coexist. Good read!

If a long-running process is part of your application’s workflow, rather than blocking the response, you should handle it in the background, outside the normal request/response flow. By Michael Herman.

By the end of this tutorial, you will be able to:

• Integrate Celery into a Flask app and create tasks.
• Containerize Flask, Celery, and Redis with Docker.
• Run processes in the background with a separate worker process.
• Save Celery logs to a file.
• Set up Flower to monitor and administer Celery jobs and workers.
• Test a Celery task with both unit and integration tests.

Perhaps your web application requires users to submit a thumbnail (which will probably need to be re-sized) and confirm their email when they register. If your application processed the image and sent a confirmation email directly in the request handler, then the end user would have to wait unnecessarily for them both to finish processing before the page loads or updates. Instead, you’ll want to pass these processes off to a task queue and let a separate worker process deal with it, so you can immediately send a response back to the client. Nice one!

Due to its popularity, JWT attacks are one of of the most exploited vulnerability by attackers. Each JWT contains base64 encoded JSON objects. By Aamir Ahmed.

A cryptographic algorithm is used to sign JWT tokens to ensure the token’s integrity and protect against JWT attacks. The article further deals with:

• JWT structure
• JWT attacks in the wild
  • Change to ‘NONE’
  • JWT token expiration
  • HMAC algorithm
  • Brute-forcing JWT token
  • Improper signature verification
  • Automate it all
  • Directory traversal
  • SQL Injection
  • JKU header tampering

HMAC and RSA are two most common algorithms used in JWT . HMAC works on the principle of symmetric encryption while RSA used assymetric encryption. To preserve integrity, the secrecy of secret key in HMAC and private key in RSA must be maintained. Good read!

While containers help developers rapidly build and run cross-platform applications, creating error-free apps remains a constant challenge. And while it’s not always obvious how container errors occur, this mystery is even harder for newer developers to unravel. Figuring out how to debug Docker containers can seem daunting. By Tyler Charboneau.

In this community all-hands session, Ákos Takács demonstrated how to solve many of these pesky problems and gain the superpower of fixing containers. He covers finding and fixing common container mistakes:

• Using the CLI for extra container visibility
  • Change your CLI output formatting for visibility and readability
• Remember to leverage your logs
• Tackle issues with ENTRYPOINT
• Access and inspect container content
  • Dive deeply into files and folders
• Solve Docker Build errors
• Solve Docker Compose errors
• Optional: Make direct file edits within running containers
• Investigate less and develop more

Overall, the process of fixing a container, on the surface, may seem daunting to newer Docker users. The methods we’ve highlighted above can dramatically reduce that troubleshooting complexity — saving you time and effort. You can spend less time investigating issues and more time creating the applications users love. And we think those skills are pretty heroic. Nice one!

Web3 browsers like Brave allow users to access DApps, integrate cryptocurrencies and surf over the decentralized web with greater privacy and security. The phrase “Web3” is used to characterize multiple evolutions of web interaction and usage along various paths, including creating a geospatial web, utilizing artificial intelligence tools and making content available through numerous non-browser apps or Web3 browsers. By Onkar Singh.

This article will discuss Web3 fundamentals, key features of a Web3 browser, how a Web3 browser works and how to use one:

• What is a Web3 browser?
• How does a Web3 browser work?
• How to use a Web3 browser?
• Opera Web3 browser
• Opera Web3 browser
• Brave Web3 browser
• Beaker browser
• The future of Web3 browsers

Shift towards decentralized web calls for novel and innovative solutions to enhance the user experience, and Web3 browsers acting as a gateway to DApps are essential to access the digital economy. Interesting read!